The Scot says: “I am a sheep herder, like my father before me. I want my country to be full of lovely sheep farms.”
Whoosh, and so it was.
The Englishman was amazed and says: “I want a wall around England to keep those damned Scots and Welsh out.”
Bang, there was a wall around England.
The Welshman says: “Tell me more about this wall.”
The genie says: “It’s 200 feet high, 100 feet thick, it goes all around England, and nothing can get in or out.”
The Welshman says: “Fill it with water.”